scholarly journals Numerical Analysis of Twin-Roll Casting of Strips With Profiled Cross-Section

2018 ◽  
Vol 21 (4) ◽  
Author(s):  
Serhii Bondarenko ◽  
Mykhailo Stolbchenko ◽  
Mirko Schaper ◽  
Olexandr Grydin
Keyword(s):  
Numerical Analysis ◽  
Cross Section ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

Numerical analysis of the twin-roll casting of thin aluminium-steel clad strips

2014 ◽  
Vol 78 (3-4) ◽  
pp. 121-130 ◽  
Author(s):  
M. Stolbchenko ◽  
O. Grydin ◽  
A. Samsonenko ◽  
V. Khvist ◽  
M. Schaper
Keyword(s):  
Numerical Analysis ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

scholarly journals Device for twin-roll casting of strips with profiled cross-section

2020 ◽  
Vol 1,2020 (1,2020 (124)) ◽  
pp. 44-50
Author(s):  
Bondarenko S ◽  
Grydin O ◽  
Oginskiy Yo ◽  
Kuzmina O ◽  
Frolov Ya
Keyword(s):  
Cross Section ◽  
Three Dimensional ◽  
Practical Significance ◽  
Practical Implementation ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Casting Unit ◽  
Synchronous Rotation ◽  
Three Dimensional Models ◽  
Twin Roll

Goal. This article is devoted to the development of a new method of roll-crystallizers profiling for twin-roll casting in order to provide the possibility of manufacturing strips with variable geometry on width as one of the more widely used products in the world. Method. The proposed method of profiling is implemented by using profiling strips that cover one or both rolls-crystallizers. In this way achieved profiling of the surface of the cylindrical internally water-cooled rolls, which corresponds to the desired type of strips profiled cross-section. Research results. For the practical implementation of the proposed profiling method was developed device for twin-roll of strips with profiled cross- section. In this paper presented the basic scheme of developed device for twin-roll casting of strips with profiled cross-section using endless strips and given the principle of operation of developed device for profiling. Scientific novelty. A feature of the developed device is its universality, which provides the possibility of synchronous rotation of tension, profiled and compensating-tension rollers in perpendicular plane to the axis of rotation of the rolls-crystallizers. This implementation of the device for twin-roll casting allows to manufacture different types of strips with profiled cross-section. Practical significance. For developed device for twin-roll casting of strips with profiled cross-section has been obtained patent for the invention of Ukraine. For further practical implementation of the developed device, considering the adjustments that provide practical implementation on a specific laboratory twin-roll casting unit, the device of twin-roll casting of strips with profiled cross-section was designed. In the work are presented the basic structural elements and their appearance in the form of three-dimensional models.

Numerical Analysis of Horizontal Twin-Roll Casting for Mg-AZ31

2018 ◽  
Vol 941 ◽  
pp. 1354-1359
Author(s):  
Jong Jin Park
Keyword(s):  
Plastic Deformation ◽  
Steady State ◽  
Numerical Analysis ◽  
Sheet Thickness ◽  
Two Dimensions ◽  
Optimum Process ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll ◽  
Steady State Solutions

Molten Mg-AZ31 cools and solidifies to a sheet in horizontal twin-roll casting. In the present investigation, this process was numerically analyzed in two dimensions under various conditions. Steady-state solutions were obtained including plastic deformation after solidification. Based on results of the analyses, an optimum process schedule was proposed for production of a sheet of 1 mm in thickness where the sheet thickness decreased from 3 mm through a couple of transitions during operation. However, the schedule was recommended up to 2 mm in thickness due to the restriction in strength of the sleeve material.

Tailored Strips by Welding, Strip Profile Rolling and Twin Roll Casting

2014 ◽  
Vol 907 ◽  
pp. 29-39 ◽  
Author(s):  
Markus Daamen ◽  
Daniel Dávalos Julca ◽  
Gerhard Hirt
Keyword(s):  
Cross Section ◽  
Steel Strip ◽  
Thickness Distribution ◽  
304 Stainless Steel ◽  
Aisi 304 ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Strip Profile ◽  
Strip Geometry ◽  
Twin Roll

Conventional strips can be converted into tailored strips by further processing such as rolling and welding. Tailored strips have a thickness or thickness distribution which is designed according to the expected loads. A new approach for the production of tailored strips is the twin roll casting of profiled strips. This technology combines the advantages of direct strip casting and the production of steel strip with an optimized cross section. In this paper the achievable process limits regarding the geometry of tailored strips with varying thickness in the cross section made by strip profile rolling, twin roll casting and welding are discussed and compared. Furthermore, experiments to demonstrate the suitability of twin roll casting to produce tailored strips made of AISI 304 stainless steel are treated. A selected tailored strip geometry of 150 x 1.5 mm2 (width x thickness) with a difference in strip thickness of 33% over the width was cast.

Texture in NiTi-Based Shape Memory Alloys Produced by Twin Roll Casting

2013 ◽  
Vol 203-204 ◽  
pp. 101-104 ◽  
Author(s):  
Tomasz Goryczka ◽  
Patrick Ochin
Keyword(s):  
Chemical Composition ◽  
Heat Flow ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Cross Section ◽  
Solidification Rate ◽  
Casting Technique ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

Two shape memory alloys with nominal chemical composition: Ni50Ti50 and Ni47Ti50Co3 were produced using twin roll casting technique (TRC). Relatively high cooling rate realized during solidification causes directional heat flow. In result of that, high textured strips were produced. However, the total amount of the preferentially oriented grains differs between surface and cross-section of the strip. At surface, where the crystallization of the grains is the most intensive amount of the grains can reach about 77%. At the cross-section of both strips, where the solidification rate decreased, the total amount of the textured grains was not higher than 57%.

scholarly journals Mechanism of Electromagnetic Field in the Sub-RapidSolidification of High-Strength Al-Cu-Li Alloy Produced by Twin-Roll Casting

Metals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 952
Author(s):  
Shiju Li ◽  
Bowen Wei ◽  
Wei Yu ◽  
Chen He ◽  
Yong Li ◽  
...  
Keyword(s):  
Body Force ◽  
High Strength ◽  
Solidification Structure ◽  
Experimental Characterization ◽  
Alloy Plate ◽  
Twin Roll Casting ◽  
Comprehensive Properties ◽  
Roll Casting ◽  
Mold Casting ◽  
Twin Roll

In this work, a Al-Cu-Li alloy plate with outstanding mechanical properties was successfully prepared with electromagnetic twin-roll casting (TRC) technology. The microstructure of Al-Cu-Li alloy manufactured by conventional mold casting, TRC, and electromagnetic TRC was studied in detail. The action mechanism of electromagnetic oscillation field (EOF) in the TRC process was studied by systematic experimental characterization and numerical simulation. The results show that the EOF will enlarge the circumfluence area in the cast-rolling zone, accelerate the mass transfer and heat transfer in the molten pool, and make the solute field and flow field in the liquid cavity tend to be evenly distributed. Further, the introduction of the EOF will produce the electromagnetic body force F with the maximum strength of 14 N/m3. The F acting on the solidification front will eliminate the accumulation and deposition of Cu2+, Li+, Mg2+, Zn2+, Mn2+ at the dendrite tip and inhibit the growth of dendrites. At the same time, the F can refine the microstructure of the TRC plate, promote the formation of equiaxed crystals, improve the supersaturated solid solubility of solute elements in the a(Al) matrix, and avoid the appearance of obvious solute segregation area or the formation of excessive solute enrichment area. Therefore, the macro-segregation in TRC plate was significantly reduced, the solidification structure was dramatically refined, and the comprehensive properties of the alloy were remarkably improved.

Sign in / Sign up

Export Citation Format

Share Document